Soft starter of single-phase photovoltaic water pump inverter and use method of soft starter

Abstract

The invention relates to the technical field of soft starters, and discloses a soft starter of a single-phase photovoltaic water pump inverter and a using method thereof, the soft starter comprises a distribution box, a cabinet door is hinged to the surface of the distribution box, the soft starter is fixedly connected to the inner wall of the distribution box, an electric brake is fixedly connected to the inner wall of the distribution box, and the soft starter further comprises a limiting part and a control part, the limiting part comprises a groove plate, the surface of the groove plate is fixedly connected with the inner wall of the distribution box, and a limiting hole is formed in the surface of the groove plate. After the soft starter is installed in the distribution box, the soft starter is connected with the electrical parts in the distribution box through the cable, the limiting component is arranged in the distribution box, the cable in the distribution box is limited through the limiting component, and the cover plate component is arranged on the surface of the limiting component. The cover plate component is used for extruding the cable in the limiting component, the cable in the limiting component is prevented from falling off, and the cover plate component is fixed through the fixing component.

Description

Technical Field

[0001] The present invention relates to the technical field of soft starters, and in particular to a soft starter of a single-phase photovoltaic water pump inverter and a use method thereof. Background Art

[0002] ‌Water pump soft starter‌ is a device specially used to control the slow start of the motor and adjust the speed. It gradually increases the voltage and current of the motor to prevent the motor from directly bearing the full voltage impact, thereby reducing the mechanical stress of the motor when starting, extending its service life, and ensuring the stable operation of the power grid. ‌Soft starter is widely used in equipment that requires smooth starting, especially loads such as fans, water pumps, conveyors and compressors. It can effectively limit the starting current of AC asynchronous motors when starting; At present, the soft starter used in the water pump inverter needs to be installed inside the distribution box when in use. When the soft starter is installed inside the distribution box, it needs to be connected to electrical parts such as the switch and the inverter through multiple cables. When there are many cables inside the distribution box, it will be messy. When the operator needs to install the soft starter, the messy cables need to be checked one by one by the operator, which affects the installation of the soft starter. Summary of the invention

[0003] The object of the present invention is to provide a soft starter for a single-phase photovoltaic water pump inverter and a method of using the same, so as to solve the problems raised in the above background technology.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a soft starter for a single-phase photovoltaic water pump inverter and a method for using the same, comprising a distribution box, a cabinet door hinged on the surface of the distribution box, a soft starter fixedly connected to the inner wall of the distribution box, a switch fixedly connected to the inner wall of the distribution box, and further comprising: A limiting component, the limiting component comprising a groove plate, the surface of the groove plate is fixedly connected to the inner wall of the distribution box, and the surface of the groove plate is provided with a limiting hole; A cover plate component, the cover plate component comprising a cover plate, a surface of the cover plate being fixedly connected to a fixing plate; A fixing component, the fixing component comprising a fixing block, a surface of the fixing block is fixedly connected to a surface of the cover plate, and a telescopic frame is fixedly connected to the surface of the fixing block; The extrusion component includes a mounting rod, and the end of the mounting rod is fixedly connected to the surface of the cover plate.

[0005] Further, the limiting component includes a receiving plate, a receiving groove is provided on the surface of the receiving plate, a through hole is provided on the surface of the receiving plate, a round hole frame is fixedly connected to the surface of the receiving plate, a threaded adjustment rod is fixedly connected to the inner wall of the round hole frame, and a grip rod is fixedly connected to the surface of the threaded adjustment rod; The inner wall of the groove plate is fixedly connected with a slide plate, the inner wall of the storage plate is fixedly connected with a sliding frame, the inner wall of the sliding frame is fixedly connected with a contact plate, and the inner wall of the storage groove is provided with a connecting hole.

[0006] Furthermore, the inner wall of the storage plate is slidably connected to the surface of the groove plate, the inner wall of the sliding frame is slidably connected to the surface of the slide slot plate, the surface of the contact plate contacts the inner wall of the slide slot plate, the end of the contact plate extends to the outer end of the sliding frame, the storage plates are symmetrically arranged with the groove plate as the center, the number of the storage plates is two, the two storage plates are symmetrically arranged with the threaded adjustment rod as the center, and the grip rod is located at the surface center of the threaded adjustment rod.

[0007] Further, the cover plate component comprises a sliding hole plate, the surface of the sliding hole plate is fixedly connected to the end of the fixed plate, and the inner wall of the sliding hole plate is slidably connected to a positioning plate; The number of the cover plates is four, and the four cover plates are arranged in two groups, and the number of each group is two, and the two groups of cover plates are symmetrically arranged with the threaded adjustment rod as the center.

[0008] Furthermore, the sliding hole plate is located at one end of the fixing plate away from the cover plate, the surface of the cover plate contacts the inner wall of the receiving groove, and the surface of the sliding hole plate contacts the inner wall of the groove plate.

[0009] Further, the fixing component comprises a mounting plate, the mounting plate is fixedly connected to the surface of the telescopic frame, one end of the mounting plate away from the telescopic frame is fixedly connected to an elastic rod, and the surface of the telescopic frame is fixedly connected to a plug plate; The fixing block is located at one end of the cover plate away from the receiving plate, and the surface of the inserting plate contacts the inner wall of the through hole.

[0010] Furthermore, the number of the telescopic frames is two, and the two telescopic frames are symmetrically arranged with the groove plate as the center. The number of the mounting plates is four, and the four mounting plates are arranged into two groups, and the number of each group is two, and the elastic rod is located at one end where the two mounting plates are close to each other.

[0011] Further, the extrusion component includes an elastic frame, the end of the elastic frame is fixedly connected to the end of the mounting rod, the end of the elastic frame away from the mounting rod is fixedly connected to a semicircular frame, and the end of the semicircular frame away from the elastic frame is fixedly connected to a right-angle plate; The elastic frame is located at one end of the mounting rod away from the cover plate, the surface of the right-angle plate contacts the surface of the receiving plate, and the end of the right-angle plate away from the receiving plate contacts the surface of the groove plate.

[0012] Furthermore, a method for using a soft starter of a single-phase photovoltaic water pump inverter comprises the following steps: S1: After the cable is placed inside the groove plate, the cable extends to the inside of the distribution box through the limit hole to connect to the soft starter, and the end of the cable away from the groove plate extends to the inside of the storage slot through the connection hole, and the cable inside the storage slot extends to the inside of the distribution box through the through hole for connection and use; S2: Push the cover plate to slide on the surface of the storage slot, and use the cover plate to squeeze and limit the cables inside the storage slot to prevent the cables from popping out of the storage slot due to toughness. When the cover plate moves, it pushes the sliding hole plate to move through the fixed plate. When the surface of the sliding hole plate corresponds to the inner wall of the groove plate; S3: After the cover plate is installed inside the storage slot, the telescopic frame pushes the cover plate to squeeze the inside of the storage slot through the elasticity of the elastic rod, thereby improving the stability of the cover plate after installation. When the cover plate enters the inside of the storage slot, the telescopic frame pushes the plug plate to contact the inner wall of the through hole as the cover plate moves; S4: When the cover plate enters the storage slot, the elastic frame is pushed to move by the mounting rod, and the elastic frame pushes the right-angle plate to move toward the inside of the distribution box through the semicircular frame, and the exposed cables are squeezed and limited by the right-angle plate.

[0013] The present invention has the following beneficial effects: After the soft starter is installed inside the distribution box, the soft starter is connected to the electrical parts inside the distribution box through the cable, a limiting component is arranged inside the distribution box, the cable inside the distribution box is limited by the limiting component, a cover component is arranged on the surface of the limiting component, the cover component is used to squeeze the cable inside the limiting component to prevent the cable in the limiting component from falling off, the cover component is fixed by the fixing component, the squeezing component can squeeze the cable inside the distribution box, and the stability of the cable after installation is improved.

[0014] After the cable is placed inside the groove plate of the present invention, the cable extends to the inside of the distribution box through the limiting hole and is connected to the soft starter, and the end of the cable away from the groove plate extends to the inside of the storage groove through the connecting hole, and the cable inside the storage groove extends to the inside of the distribution box through the through hole for connection and use. The storage plate and the groove plate cooperate with each other to limit the cable, thereby improving the neatness of the cable inside the distribution box. When the position of the storage plate needs to be adjusted, the center rotation of the threaded adjustment rod is twisted by the grip rod, and the end of the threaded adjustment rod will move toward the center of the distribution box, thereby reducing the length of the cable exposed outside, making it convenient for the operator to install the cable at the connection of the soft starter.

[0015] After the cable of the present invention is installed, the cover plate is pushed to slide on the surface of the storage groove, and the cable inside the storage groove is squeezed and limited by the cover plate to prevent the cable from popping out of the storage groove due to its toughness. When moving, the cover plate pushes the sliding hole plate to move through the fixed plate. When the surface of the sliding hole plate corresponds to the inner wall of the groove plate, the cover plate is pressed to move toward the inside of the storage groove. At this time, the sliding hole plate and the positioning plate will enter the inside of the groove plate to squeeze the cable, thereby further limiting the cable.

[0016] After the cover plate of the present invention is installed in the storage slot, the telescopic frame pushes the cover plate to squeeze the inside of the storage slot through the elasticity of the elastic rod, thereby improving the stability of the cover plate after installation; when the cover plate enters the storage slot, the telescopic frame pushes the plug plate to contact the inner wall of the through hole as the cover plate moves, and the plug plate is used to limit the cover plate, thereby improving the convenience of installing the cover plate; when the cover plate needs to be disassembled, the plug plate can be directly pulled out to disassemble the cover plate, thereby improving the convenience of disassembling the cover plate.

[0017] When the cover plate of the present invention enters the interior of the storage groove, the installation rod pushes the elastic frame to move, and the elastic frame pushes the right-angle plate to move toward the interior of the distribution box through the semicircular frame. The right-angle plate is used to squeeze and limit the cables exposed outside to prevent the cables from falling off the soft starter due to shaking.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the power distribution box of the present invention; Figure 3 It is a schematic diagram of the overall structure of the limiting component of the present invention; Figure 4 Another structural schematic diagram of the limiting component of the present invention; Figure 5 This is a schematic diagram of the overall structure of the cover plate component of the present invention; Figure 6 It is a schematic diagram of the overall structure of the fixing component of the present invention; Figure 7 It is a schematic diagram of the overall structure of the extruded component of the present invention; Figure 8 Another schematic diagram of the structure of the extruded component of the present invention; Fig. 9 It is a schematic diagram of the process structure of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. distribution box; 2. cabinet door; 3. soft starter; 4. switch; 5. limit component; 6. cover component; 7. fixing component; 8. extrusion component; 10. storage plate; 11. through hole; 12. limit hole; 13. threaded adjustment rod; 14. storage slot; 15. groove plate; 16. round hole rack; 17. grip rod; 18. sliding rack; 19. contact plate; 20. slide plate; 21. connecting hole; 30. cover plate; 31. fixing plate; 32. positioning plate; 33. sliding hole plate; 40. fixing block; 41. mounting plate; 42. elastic rod; 43. telescopic rack; 44. plug plate; 50. mounting rod; 51. elastic rack; 52. semicircular rack; 53. right angle plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 9 As shown, the present invention is a soft starter for a single-phase photovoltaic water pump inverter and a method of using the same, comprising a distribution box 1, a cabinet door 2 is hingedly connected to the surface of the distribution box 1, a soft starter 3 is fixedly connected to the inner wall of the distribution box 1, a switch 4 is fixedly connected to the inner wall of the distribution box 1, and further comprising: The limiting component 5 includes a groove plate 15, the surface of the groove plate 15 is fixedly connected to the inner wall of the distribution box 1, and the surface of the groove plate 15 is provided with a limiting hole 12; The cover plate component 6 includes a cover plate 30, and a fixing plate 31 is fixedly connected to the surface of the cover plate 30; The fixing component 7 includes a fixing block 40, a surface of the fixing block 40 is fixedly connected to a surface of the cover plate 30, and a telescopic frame 43 is fixedly connected to the surface of the fixing block 40; The extrusion component 8 includes a mounting rod 50, and the end of the mounting rod 50 is fixedly connected to the surface of the cover plate 30. After the soft starter 3 is installed inside the distribution box 1, the soft starter 3 is connected to the electrical parts inside the distribution box 1 through cables. A limiting component 5 is provided inside the distribution box 1, and the cables inside the distribution box 1 are limited by the limiting component 5. A cover plate component 6 is provided on the surface of the limiting component 5, and the cover plate component 6 is used to squeeze the cables inside the limiting component 5 to prevent the cables in the limiting component 5 from falling off. The cover plate component 6 is fixed by the fixing component 7. The extrusion component 8 can squeeze the cables inside the distribution box 1 to improve the stability of the cables after installation.

[0024] The limiting component 5 includes a receiving plate 10, a receiving groove 14 is formed on the surface of the receiving plate 10, a through hole 11 is formed on the surface of the receiving plate 10, a round hole frame 16 is fixedly connected to the surface of the receiving plate 10, a threaded adjustment rod 13 is fixedly connected to the inner wall of the round hole frame 16, and a gripping rod 17 is fixedly connected to the surface of the threaded adjustment rod 13; The inner wall of the groove plate 15 is fixedly connected with a slide plate 20 , the inner wall of the storage plate 10 is fixedly connected with a sliding frame 18 , the inner wall of the sliding frame 18 is fixedly connected with a contact plate 19 , and the inner wall of the storage groove 14 is provided with a connecting hole 21 .

[0025] The inner wall of the storage plate 10 is slidably connected to the surface of the groove plate 15, and the inner wall of the sliding frame 18 is slidably connected to the surface of the slide groove plate 20. After the cable is placed inside the groove plate 15, the cable extends to the inside of the distribution box 1 through the limiting hole 12 and is connected to the soft starter 3, and the end of the cable away from the groove plate 15 extends to the inside of the storage groove 14 through the connecting hole 21, and the cable inside the storage groove 14 extends to the inside of the distribution box 1 through the through hole 11 for connection and use. The storage plate 10 and the groove plate 15 cooperate with each other to limit the cable, thereby improving the neatness of the cable inside the distribution box 1. 0, by twisting the center of the threaded adjustment rod 13 by the grip 17, the end of the threaded adjustment rod 13 will move toward the center of the distribution box 1, reducing the length of the cable exposed to the outside, making it convenient for the operator to install the cable at the connection of the soft starter 3. The surface of the contact plate 19 contacts the inner wall of the slide groove plate 20, and the end of the contact plate 19 extends to the outer end of the sliding frame 18. The storage plate 10 is symmetrically arranged with the groove plate 15 as the center. There are two storage plates 10, and the two storage plates 10 are symmetrically arranged with the threaded adjustment rod 13 as the center. The grip 17 is located at the surface center of the threaded adjustment rod 13.

[0026] The cover plate component 6 includes a sliding hole plate 33, the surface of the sliding hole plate 33 is fixedly connected to the end of the fixed plate 31, and the inner wall of the sliding hole plate 33 is slidably connected to the positioning plate 32; There are four cover plates 30 , which are arranged in two groups. Each group has two cover plates 30 , and the two groups of cover plates 30 are symmetrically arranged with the threaded adjustment rod 13 as the center.

[0027] The sliding hole plate 33 is located at one end of the fixing plate 31 away from the cover plate 30. After the cable of the present invention is installed, the cover plate 30 is pushed to slide on the surface of the storage groove 14, and the cable inside the storage groove 14 is squeezed and limited by the cover plate 30 to prevent the cable from popping out of the storage groove 14 due to its toughness. When moving, the cover plate 30 will push the sliding hole plate 33 to move through the fixing plate 31. When the surface of the sliding hole plate 33 corresponds to the inner wall of the groove plate 15, the cover plate 30 is pressed to move toward the inside of the storage groove 14. At this time, the sliding hole plate 33 and the positioning plate 32 will enter the inside of the groove plate 15 to squeeze the cable, further limit the cable, and the surface of the cover plate 30 contacts the inner wall of the storage groove 14, and the surface of the sliding hole plate 33 contacts the inner wall of the groove plate 15.

[0028] The fixing component 7 includes a mounting plate 41, which is fixedly connected to the surface of the telescopic frame 43, an end of the mounting plate 41 away from the telescopic frame 43 is fixedly connected to an elastic rod 42, and a plug plate 44 is fixedly connected to the surface of the telescopic frame 43; The fixing block 40 is located at one end of the cover plate 30 away from the receiving plate 10 , and the surface of the inserting plate 44 contacts the inner wall of the through hole 11 .

[0029] There are two telescopic frames 43, which are symmetrically arranged with the groove plate 15 as the center. There are four mounting plates 41. After the cover plate 30 of the present invention is installed in the storage groove 14, the telescopic frame 43 pushes the cover plate 30 to squeeze the inside of the storage groove 14 through the elasticity of the elastic rod 42, thereby improving the stability of the cover plate 30 after installation. When the cover plate 30 enters the storage groove 14, the telescopic frame 43 will push the plug plate 44 to contact the inner wall of the through hole 11 as the cover plate 30 moves, and the plug plate 44 is used to limit the cover plate 30, thereby improving the convenience of the cover plate 30 during installation. When the cover plate 30 needs to be disassembled, the plug plate 44 can be directly pulled out to disassemble the cover plate 30, thereby improving the convenience of the cover plate 30 during disassembly. The four mounting plates 41 are arranged in two groups, and the number of each group is arranged in two. The elastic rod 42 is located at one end of the two mounting plates 41 close to each other.

[0030] The extrusion component 8 includes an elastic frame 51, the end of the elastic frame 51 is fixedly connected to the end of the mounting rod 50, one end of the elastic frame 51 away from the mounting rod 50 is fixedly connected to a semicircular frame 52, and one end of the semicircular frame 52 away from the elastic frame 51 is fixedly connected to a right-angle plate 53; The elastic frame 51 is located at the end of the mounting rod 50 away from the cover plate 30, and the surface of the right-angle plate 53 contacts the surface of the storage plate 10. When the cover plate 30 of the present invention enters the interior of the storage groove 14, the elastic frame 51 is pushed to move by the mounting rod 50. The elastic frame 51 pushes the right-angle plate 53 to move toward the interior of the distribution box 1 through the semicircular frame 52. The right-angle plate 53 is used to squeeze and limit the exposed cables to prevent the cables from falling off the soft starter 3 due to shaking. The end of the right-angle plate 53 away from the storage plate 10 contacts the surface of the groove plate 15.

[0031] A method for using a soft starter of a single-phase photovoltaic water pump inverter comprises the following steps: S1: After the cable is placed inside the groove plate 15, the cable extends to the inside of the distribution box 1 through the limit hole 12 and is connected to the soft starter 3, and the end of the cable away from the groove plate 15 extends to the inside of the storage groove 14 through the connection hole 21, and the cable inside the storage groove 14 extends to the inside of the distribution box 1 through the through hole 11 for connection and use; S2: Push the cover plate 30 to slide on the surface of the storage groove 14, and use the cover plate 30 to squeeze and limit the cables inside the storage groove 14 to prevent the cables from popping out of the storage groove 14 due to toughness. When the cover plate 30 moves, it pushes the sliding hole plate 33 to move through the fixing plate 31. When the surface of the sliding hole plate 33 corresponds to the inner wall of the groove plate 15; S3: After the cover plate 30 is installed inside the storage slot 14, the telescopic frame 43 pushes the cover plate 30 to squeeze the inside of the storage slot 14 through the elasticity of the elastic rod 42, thereby improving the stability of the cover plate 30 after installation. When the cover plate 30 enters the inside of the storage slot 14, the telescopic frame 43 pushes the plug plate 44 to contact the inner wall of the through hole 11 as the cover plate 30 moves; S4: When the cover plate 30 enters the storage groove 14, the elastic frame 51 is pushed to move by the mounting rod 50. The elastic frame 51 pushes the right-angle plate 53 to move toward the inside of the distribution box 1 through the semicircular frame 52, and the exposed cables are squeezed and limited by the right-angle plate 53.

[0032] When in use, after the soft starter 3 is installed inside the distribution box 1, the soft starter 3 is connected to the electrical parts inside the distribution box 1 through the cable, and a limiting component 5 is provided inside the distribution box 1. The cable inside the distribution box 1 is limited by the limiting component 5. A cover component 6 is provided on the surface of the limiting component 5. The cover component 6 is used to squeeze the cable inside the limiting component 5 to prevent the cable in the limiting component 5 from falling off. The cover component 6 is fixed by the fixing component 7. The squeezing component 8 can squeeze the cable inside the distribution box 1 to improve the stability of the cable after installation. After the cable is placed inside the groove plate 15, the cable extends to the inside of the distribution box 1 through the limiting hole 12 and The soft starter 3 is connected, and the end of the cable away from the groove plate 15 extends to the inside of the storage groove 14 through the connecting hole 21, and the cable inside the storage groove 14 extends to the inside of the distribution box 1 through the through hole 11 for connection and use. The storage plate 10 and the groove plate 15 cooperate with each other to limit the cable, thereby improving the neatness of the cable inside the distribution box 1. When the position of the storage plate 10 needs to be adjusted, the center of the threaded adjustment rod 13 is twisted by the grip rod 17, and the end of the threaded adjustment rod 13 will move toward the center of the distribution box 1, reducing the length of the cable exposed outside, making it convenient for the operator to install the cable at the connection of the soft starter 3. After the cable is installed, push the cover plate 30 in the storage groove. The cover plate 30 slides on the surface of the storage groove 14, and the cable inside the storage groove 14 is squeezed and limited by the cover plate 30 to prevent the cable from popping out of the storage groove 14 due to its toughness. When the cover plate 30 moves, it pushes the sliding hole plate 33 to move through the fixing plate 31. When the surface of the sliding hole plate 33 corresponds to the inner wall of the groove plate 15, the cover plate 30 is pressed to move toward the inside of the storage groove 14. At this time, the sliding hole plate 33 and the positioning plate 32 enter the inside of the groove plate 15 to squeeze the cable, further limiting the cable. After the cover plate 30 is installed in the storage groove 14, the telescopic frame 43 pushes the cover plate 30 to squeeze the inside of the storage groove 14 through the elasticity of the elastic rod 42, thereby improving the stability of the cover plate 30 after installation. When the plate 30 enters the interior of the storage groove 14, the telescopic frame 43 will push the plug plate 44 to contact the inner wall of the through hole 11 as the cover plate 30 moves, and the plug plate 44 is used to limit the cover plate 30, thereby improving the convenience of the cover plate 30 during installation. When the cover plate 30 needs to be removed, the plug plate 44 can be directly pulled out to remove the cover plate 30, thereby improving the convenience of the cover plate 30 during removal. When the cover plate 30 enters the interior of the storage groove 14, the elastic frame 51 is pushed to move by the installation rod 50, and the elastic frame 51 pushes the right-angle plate 53 to move toward the inside of the distribution box 1 through the semicircular frame 52, and the exposed cable is squeezed and limited by the right-angle plate 53 to prevent the cable from falling off the soft starter 3 due to shaking.

[0033] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A soft starter for a single-phase photovoltaic water pump inverter, comprising a distribution box (1), a cabinet door (2) being hingedly connected to the surface of the distribution box (1), a soft starter (3) being fixedly connected to the inner wall of the distribution box (1), and a switch (4) being fixedly connected to the inner wall of the distribution box (1), characterized in that: Also includes: A limiting component (5), the limiting component (5) comprising a groove plate (15), the surface of the groove plate (15) being fixedly connected to the inner wall of the distribution box (1), and a limiting hole (12) being provided on the surface of the groove plate (15); A cover plate component (6), the cover plate component (6) comprising a cover plate (30), a fixing plate (31) being fixedly connected to a surface of the cover plate (30); A fixing component (7), the fixing component (7) comprising a fixing block (40), the surface of the fixing block (40) being fixedly connected to the surface of the cover plate (30), and the surface of the fixing block (40) being fixedly connected to a telescopic frame (43); An extrusion component (8), the extrusion component (8) comprising a mounting rod (50), the end of the mounting rod (50) being fixedly connected to the surface of the cover plate (30).

2. The soft starter of a single-phase photovoltaic water pump inverter according to claim 1, characterized in that: The limiting component (5) comprises a receiving plate (10), a receiving groove (14) is provided on the surface of the receiving plate (10), a through hole (11) is provided on the surface of the receiving plate (10), a round hole frame (16) is fixedly connected to the surface of the receiving plate (10), a threaded adjustment rod (13) is fixedly connected to the inner wall of the round hole frame (16), and a gripping rod (17) is fixedly connected to the surface of the threaded adjustment rod (13); The inner wall of the groove plate (15) is fixedly connected to a slide plate (20), the inner wall of the storage plate (10) is fixedly connected to a sliding frame (18), the inner wall of the sliding frame (18) is fixedly connected to a contact plate (19), and the inner wall of the storage groove (14) is provided with a connection hole (21).

3. The soft starter of a single-phase photovoltaic water pump inverter according to claim 2, characterized in that: The inner wall of the storage plate (10) is slidably connected to the surface of the groove plate (15), the inner wall of the sliding frame (18) is slidably connected to the surface of the slide groove plate (20), the surface of the contact plate (19) is in contact with the inner wall of the slide groove plate (20), and the end of the contact plate (19) extends to the outer end of the sliding frame (18), the storage plate (10) is symmetrically arranged with the groove plate (15) as the center, the number of the storage plates (10) is two, the two storage plates (10) are symmetrically arranged with the threaded adjustment rod (13) as the center, and the grip rod (17) is located at the center of the surface of the threaded adjustment rod (13).

4. The soft starter of a single-phase photovoltaic water pump inverter according to claim 3 is characterized in that: The cover plate component (6) comprises a sliding hole plate (33), the surface of the sliding hole plate (33) is fixedly connected to the end of the fixed plate (31), and the inner wall of the sliding hole plate (33) is slidably connected to a positioning plate (32); The number of the cover plates (30) is four, and the four cover plates (30) are arranged in two groups, with each group having two cover plates, and the two groups of cover plates (30) are symmetrically arranged with the threaded adjustment rod (13) as the center.

5. The soft starter of a single-phase photovoltaic water pump inverter according to claim 4, characterized in that: The sliding hole plate (33) is located at one end of the fixing plate (31) away from the cover plate (30), the surface of the cover plate (30) contacts the inner wall of the receiving groove (14), and the surface of the sliding hole plate (33) contacts the inner wall of the groove plate (15).

6. The soft starter of a single-phase photovoltaic water pump inverter according to claim 5, characterized in that: The fixing component (7) comprises a mounting plate (41), the mounting plate (41) being fixedly connected to the surface of the telescopic frame (43), an end of the mounting plate (41) away from the telescopic frame (43) being fixedly connected to an elastic rod (42), and a plug plate (44) being fixedly connected to the surface of the telescopic frame (43); The fixing block (40) is located at one end of the cover plate (30) away from the storage plate (10), and the surface of the inserting plate (44) is in contact with the inner wall of the through hole (11).

7. The soft starter of a single-phase photovoltaic water pump inverter according to claim 6, characterized in that: The number of the telescopic frames (43) is two, and the two telescopic frames (43) are symmetrically arranged with the groove plate (15) as the center. The number of the mounting plates (41) is four, and the four mounting plates (41) are arranged in two groups, and the number of each group is two. The elastic rod (42) is located at one end of the two mounting plates (41) close to each other.

8. The soft starter of a single-phase photovoltaic water pump inverter according to claim 7, characterized in that: The extrusion component (8) comprises an elastic frame (51), an end of the elastic frame (51) being fixedly connected to an end of a mounting rod (50), an end of the elastic frame (51) away from the mounting rod (50) being fixedly connected to a semicircular frame (52), and an end of the semicircular frame (52) away from the elastic frame (51) being fixedly connected to a right-angle plate (53); The elastic frame (51) is located at an end of the mounting rod (50) away from the cover plate (30), the surface of the right-angle plate (53) contacts the surface of the storage plate (10), and the end of the right-angle plate (53) away from the storage plate (10) contacts the surface of the groove plate (15).

9. The method for using a soft starter for a single-phase photovoltaic water pump inverter according to claim 8, characterized in that: The following steps are involved: S1: After the cable is placed inside the groove plate (15), the cable extends through the limiting hole (12) to the inside of the distribution box (1) and is connected to the soft starter (3), and the end of the cable away from the groove plate (15) extends through the connecting hole (21) to the inside of the storage groove (14), and the cable inside the storage groove (14) extends through the through hole (11) to the inside of the distribution box (1) for connection and use; S2: Pushing the cover plate (30) to slide on the surface of the storage groove (14), and using the cover plate (30) to squeeze and limit the cable inside the storage groove (14) to prevent the cable from popping out of the storage groove (14) due to its toughness. When the cover plate (30) moves, it pushes the sliding hole plate (33) to move through the fixing plate (31). When the surface of the sliding hole plate (33) corresponds to the inner wall of the groove plate (15); S3: After the cover plate (30) is installed inside the storage groove (14), the telescopic frame (43) pushes the cover plate (30) to squeeze the inside of the storage groove (14) through the elasticity of the elastic rod (42), thereby improving the stability of the cover plate (30) after installation. When the cover plate (30) enters the inside of the storage groove (14), the telescopic frame (43) pushes the plug plate (44) to contact the inner wall of the through hole (11) as the cover plate (30) moves; S4: When the cover plate (30) enters the interior of the storage groove (14), the elastic frame (51) is pushed to move via the mounting rod (50), and the elastic frame (51) pushes the right-angle plate (53) to move toward the interior of the distribution box (1) via the semicircular frame (52), and the exposed cables are squeezed and limited via the right-angle plate (53).

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